public void TestCalculateTotalBillSmall()
{
//Testing CalculateTotalBill with small numbers
TestCalculateTotalBillSmall calculateTotalBill = new CalculateTotalBill();
decimal expected = 1;
decimal actual = calculateTotalBill.Add(0, 1);
Assert.AreEqual(expected, actual);
}
public void TestCalculateTotalBillLarge()
{
//Testing CalculateTotalBill with large numbers
TestCalculateTotalBillLarge calculateTotalBill = new CalculateTotalBill();
decimal expected = 1000000000;
decimal actual = calculateTotalBill.Add(500000000, 500000000);
Assert.AreEqual(expected, actual);
}